Two men held over the murder of a man who was dumped down a well have been bailed.

The 41-year-old and 33-year-old were held yesterday.

Damian Chlywka, 30, a Polish national who came to the UK in 2008, was assaulted, tied up and dumped down a well in Warlingham, Surrey, about two years ago.

Workmen discovered his body in a well outside an address in Audley Drive on November 15 at around 1.50pm.

A team of specialist officers including Metropolitan Police divers found that Mr Chlywka's body showed injuries "consistent with an assault" before he was put in the well. He had been bound and it is believed he was there for around two years, Scotland Yard said.

Further tests are being carried out as a post-mortem examination on November 17 did not provide a cause of death.

Detective Chief Inspector Cliff Lyons, the officer leading the investigation, said: "Damian had lived at various addresses across London including two known to be in the Croydon area. At one point he had lived at 11A Audley Road. Our focus now is to build up a fuller picture of Damian's life in the UK.

"We have given the difficult and heartbreaking news to his family who are distraught that this has happened to their loved one.

"I am appealing to anyone who knew or previously worked with him to contact the police and help us to piece together a picture of Damian's life and how it came to end in these distressing circumstances."

Seven men , aged between 21 and 27 who were arrested on suspicion of murder, have been released on bail until a date in late December.

The 41-year-old and 33-year-old have been bailed until the middle of January.